CN101614385B - 发光二极管灯具 - Google Patents

发光二极管灯具 Download PDF

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Publication number
CN101614385B
CN101614385B CN2008100680724A CN200810068072A CN101614385B CN 101614385 B CN101614385 B CN 101614385B CN 2008100680724 A CN2008100680724 A CN 2008100680724A CN 200810068072 A CN200810068072 A CN 200810068072A CN 101614385 B CN101614385 B CN 101614385B
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radiator
absorber
led lamp
light emitting
port
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CN2008100680724A
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CN101614385A (zh
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帅春江
余光
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富准精密工业(深圳)有限公司
鸿准精密工业股份有限公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/51Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/713Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/001Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

一种发光二极管灯具,包括若干发光二极管模组、一供所述发光二极管模组贴设的吸热体及一第一散热器,所述第一散热器包括一中空筒体及由该筒体内壁向内延伸而出的若干散热鳍片,所述吸热体围设于所述筒体的外侧壁,且吸热体的厚度沿该筒体的外侧壁向外递减,吸热体的外侧壁形成有贴设发光二极管模组的倾斜面,所述筒体具有第一通口,所述发光二极管灯具还包括一第二散热器,所述第二散热器包括同时贴设在吸热体与筒体顶面的基板及散热片,第二散热器具有与第一通口相连通的第二通口。与现有技术相比,本发明之发光二极管灯具工作时产生的热量经吸热体吸收再均匀地传导至中空筒体及基板上,最后经散热鳍片及散热片散发出去,确保灯具稳定工作。

Description

发光二极管灯具

技术领域

[0001] 本发明涉及一种照明装置,特别涉及一种发光二极管灯具。 背景技术

[0002] 发光二极管作为一种高效的发光源,具有环保、省电、寿命长等诸多特点已经被广泛的运用于各种领域。但是,发光二极管工作时会产生热量,特别是一些用于照明的大功率的发光二极管。热量如得不到及时的散发,易产生过热现象,进而导致其发光效率下降。

[0003] 传统的发光二极管灯具包括一板状散热体、若干安装于该散热体一侧的发光二极管模组、将散热体及发光二极管模组罩设其内的一灯罩。当发光二极管被点亮时,灯罩内的温度渐渐升高;使用一段时间后,灯罩内聚集了大量的热量。带有这些热量的空气被封闭在灯罩内无法流通,而使发光二极管温度升高。这些热量严重影响发光二极管的发光效率及使用寿命,

发明内容

[0004] 有鉴于此,有必要提供一种散热良好的发光二极管灯具。

[0005] 一种发光二极管灯具,包括若干发光二极管模组、一供所述发光二极管模组贴设的吸热体及一第一散热器,所述第一散热器包括一中空筒体及由该筒体内壁向内延伸而出的若干散热鳍片,所述吸热体围设于所述筒体的外侧壁,且吸热体的厚度沿该筒体的外侧壁向外递减,吸热体的外侧壁形成有贴设发光二极管模组的倾斜面,所述筒体具有一第一通口,该第一通口贯通所述第一散热器,所述发光二极管灯具还包括一第二散热器,所述第二散热器包括同时贴设在吸热体与筒体顶面的一基板及自该基板顶面延伸而出的若干散热片,所述第二散热器具有一与所述第一通口相连通的第二通口。

[0006] 与现有技术相比,本发明之发光二极管灯具的发光二极管模组贴设于由所述中空筒体外周缘向外延伸的吸热体上,该吸热体外侧壁形成贴设发光二极管模组的倾斜面。该发光二极管灯具工作时产生的热量经吸热体吸收再均勻地传导至中空筒体上,最后经散热鳍片散发出去,从而提高了发光二极管灯具的散热效率,进而确保灯具稳定工作。

[0007] 下面参照附图,结合实施例对本发明作进一步的描述。

附图说明

[0008] 图1是本发明之发光二极管灯具一优选实施例的组合立体图。

[0009] 图2是图1的立体分解图。

[0010] 图3是图2的倒置图。

[0011] 图4是图1的倒置图。

具体实施方式

[0012] 请参阅图1至图2,为本发明一优选实施例的发光二极管灯具,其包括一第一散热器10、围设于该第一散热器10外周的一吸热体20、贴设于该吸热体20上的若干发光二极管模组30、一叠置于该吸热体20及第一散热器10之上的第二散热器40及罩置所述发光二极管模组30的一灯罩50。

[0013] 上述第一散热器10大致呈圆筒状,由导热性能良好的铜、铝等材料一体制成。该第一散热器10包括一圆管状筒体12及由该筒体12延伸出的若干散热鳍片14。所述散热鳍片14由所述筒体12的内壁沿其径向向内延伸而出,这些散热鳍片14关于该筒体12中心轴线均勻对称地分布。所述散热鳍片14包括相互间隔、交错设立的若干第一散热鳍片142 及若干第二散热鳍片144。所述第一散热鳍片142延伸的长度大于所述第二散热鳍片144 延伸的长度。这些第一散热鳍片142的末端围设成一圆柱形第一通口 16。

[0014] 请同时参阅图3,上述吸热体20的整体外形呈去掉尖端的正棱锥体状,其由导热性能良好的金属如铜、铝等制成。该吸热体20的中央形成一圆形容置口 22,该容置口 22与吸热体20同轴且上下贯通该吸热体20。所述容置口 22的内径与所述第一散热器10的外径一致,以使该第一散热器10刚好能够穿入该容置口 22并部分容置于所述吸热体20内。 所述吸热体20可以一体形成也可以由若干等份的吸热件M组合而成,在本实施例中,所述吸热件M的数量为八。这些吸热件M关于所述吸热体20的中心轴线呈放射状均勻对称地分布,所述吸热件M的厚度由上向下逐渐递减以在吸热件M的外侧形成一倾斜的外侧面(未标示)。所述发光二极管模组30对应贴设于这些吸热件M的外侧面之上。在不同实施例中可根据实际需要的亮度来选择发光二极管模组30的数量,在本实施例中,一发光二极管模组30对应贴设于每一吸热件M的外侧面上,且所述发光二极管模组30沿吸热件 M的外侧面纵向设置,使发光二极管模组30围绕所述吸热体20的中轴均勻、对称排布。在其他实施例中,吸热体20可与第一散热器10的筒体12—体形成,使第一散热器10的筒体 12外侧壁形成均勻对称的倾斜面,所述发光二极管模组30关于第一散热器10的轴线对称地分布在倾斜面上。

[0015] 上述发光二极管模组30包括一纵长矩形的电路板32及若干均勻固定于电路板32 一侧面的发光二极管34。这些电路板32的另一侧面贴合于所述吸热体20的吸热件M上。 这些发光二极管34沿所述电路板32的纵长方向延伸并呈直线排列,从而将其发光时产生的热量均勻地传导至所述吸热体20上。

[0016] 上述第二散热器40大致呈圆盘状,由导热性能良好的铜、铝等材料一体制成。该第二散热器40包括一圆环形基板42、自该基板42表面延伸而出的若干散热片44。所述基板42围绕其中部通孔(未标示)处垂直向上延伸出一圆管状的管体46,该管体46内部具有一圆柱形的第二通口 48,该第二通口 48垂直贯通该第二散热器40。所述散热片44由所述基板42的顶面垂直延伸而出,且这些散热片44围绕于所述管体46的外周缘并呈放射状间隔排布。靠近所述管体46处的散热片44的高度高于远离管体46处的散热片44的高度, 使得所述散热片44整体上呈台阶状。所述第二散热器40盖置于所述吸热体20及穿置于该吸热体20的容置口 22内的第一散热器10之上。

[0017] 上述灯罩50为一中空碗状体,其通常由塑料、玻璃或其他透明材料制成。该灯罩 50具有一穿口 52,该穿口 52上下贯通该灯罩50。所述灯罩50的底部连接并围绕于所述第一散热器10底端的外周缘,其顶部对应连接于所述第二散热器40的基板42底面的周缘, 从而在该灯罩50与第一、第二散热器10、40之间围成一封闭腔室(未标示),所述吸热体20及贴设于该吸热体20上的发光二极管模组30 —并容置于其内。

[0018] 请同时参阅图4,组装所述发光二极管灯具时,先将所述吸热体20与发光二极管模组30相组合;然后将所述第一散热器10穿入所述吸热体20的容置口 22,其中第一散热器10的顶面与该吸热体20的顶面齐平,使得所述吸热体20对应围设所述第一散热器10 的筒体12 ;再将所述第二散热器10焊接或粘接于吸热体20与第一散热器10之上,其中第二散热器40的基板42的底面与该吸热体20的顶面及第一散热器10的顶面同时贴合,所述第一散热器10的第一通口 16与所述第二散热器40的第二通口 48相对应连通;最后,将所述灯罩50与所述第一、第二散热器10、40相配合安装,该灯罩50的底部连接并围绕于所述第一散热器10底端的外周缘,其顶部对应连接于所述第二散热器40的基板42底面的周缘,从而在该灯罩50与第一、第二散热器10、40之间围成一封闭腔室(未标示),所述吸热体20及贴设于该吸热体20上的发光二极管模组30 —并容置于其内。

[0019] 综上所述,本发明的发光二极管灯具的发光二极管模组贴置于由所述中空筒体外周缘向外延伸的吸热体上,所述第二散热器叠置于该第一散热器及吸热体之上,该第一散热器的第一通口与第二散热器的第二通口相连通。当发光二极管灯具工作时,所述发光二极管模组产生的热量被吸热体吸收,进而均勻传导至与该吸热体相连的第一散热器、第二散热器上,最后经散热鳍片及散热片散发到周围空气中去,所述第一通口与第二通口相连通,增强了散热鳍片之间及散热片之间的空气对流。如此,可确保本发明之发光二极管灯具的整体散热性能,延长发光二极管灯具的使用寿命。此外,由于供发光二极管模组30贴设的吸热件M围绕第一散热器10呈放射状对称排布,使得发光二极管模组30绕第一散热器 10的中轴线沿周向排布,所以该发光二极管灯具照射的区域较传统发光二极管广阔,在确保灯具散热性能的同时,又能达到较好的照明效果。

5

Claims (9)

1. 一种发光二极管灯具,包括若干发光二极管模组、一供所述发光二极管模组贴设的吸热体及一第一散热器,所述第一散热器包括一中空筒体及由该筒体内壁向内延伸而出的若干散热鳍片,其特征在于:所述吸热体围设于所述筒体的外侧壁,且吸热体的厚度沿该筒体的外侧壁向外递减,吸热体的外侧壁形成有贴设发光二极管模组的倾斜面,所述筒体具有一第一通口,该第一通口贯通所述第一散热器,所述发光二极管灯具还包括一第二散热器,所述第二散热器包括同时贴设在吸热体与筒体顶面的一基板及自该基板顶面延伸而出的若干散热片,所述第二散热器具有一与所述第一通口相连通的第二通口。
2.如权利要求1的发光二极管灯具,其特征在于:所述吸热体由若干吸热件组合而成, 这些吸热件关于所述筒体呈放射状分布。
3.如权利要求1的发光二极管灯具,其特征在于:所述吸热体与所述第一散热器的筒体一体形成。
4.如权利要求1所述的发光二极管灯具,其特征在于:所述吸热体中部开设有一容置口,所述容置口内壁与筒体外壁对应贴合。
5.如权利要求1所述的发光二极管灯具,其特征在于:所述第一通口由所述散热鳍片的末端围设而成。
6.如权利要求1所述的发光二极管灯具,其特征在于:所述基板呈圆环形,其中部具有一通孔,该基板围绕该通孔处向上延伸出一长圆管状的管体,该管体内部形成所述第二通
7.如权利要求6所述的发光二极管灯具,其特征在于:所述散热片由所述基板的顶面垂直延伸而出,且这些散热片围绕于所述管体的外周缘并呈放射状间隔排布。
8.如权利要求1所述的发光二极管灯具,其特征在于:还有一中空灯罩罩置所述发光二极管模组,所述灯罩与第一、第二散热器之间围成一封闭腔室,所述吸热体及贴设于该吸热体上的发光二极管模组一并容置于其内。
9.如权利要求8所述的发光二极管灯具,其特征在于:所述灯罩的底部连接并围绕于所述第一散热器底端的外周缘,其顶部对应连接于所述第二散热器底面。
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